Tillage disc arm drift control

Abstract

A cap bracket and spacer for connecting a ground engaging tool to a mounting bar of a cultivator is provided. The cap bracket can include a first member having a first side and a second side, and a second member having a first side and a second side. The second member can be joined at the second side to the second side of the first member with a peak formed where the second side of the first member is joined at the second side of the second member and a first extended portion can be provided on a first end of the cap bracket at the peak. The spacer can include a first connection flange, a second connection flange, and a spacer member extending upwards from the first connection flange and the second connection flange to define a contact surface.

What is claimed is: 
     
         1 . A cultivator comprising: a hitch assembly connectable to a tow vehicle to tow the cultivator in a travel direction;
 a tilling section having a front end and a back end;   a tool frame provided in the tilling section;   a mounting bar provided below the tool frame;   at least two adjacent ground engaging tools connected to and extending below the mounting bar, each ground engaging tool comprising:   a bottom bracket;   a cap bracket connectable to the bottom bracket, for attachment to the mounting bar, the cap bracket comprising:
 a first member having a first side and a second side; 
 a second member having a first side and a second side, the second member joined at the second side to the second side of the first member; 
 a peak formed where the second side of the first member is joined at the second side of the second member; and 
 a first extended portion extending laterally from a first end of the cap bracket at the peak so that the first extended portion at the peak extends further laterally than the first end of the cap bracket at the first side of the cap bracket; 
   an arm attached at a top end to the bottom bracket; and   a ground working tool attached to a bottom end of the arm.   
     
     
         2 . The cultivator of  claim 1  wherein torsion elements are provided between the cap bracket and the mounting bar and between the bottom bracket and the mounting bar. 
     
     
         3 . The cultivator of  claim 2  wherein the torsion elements are made from an elastic material. 
     
     
         4 . The cultivator of  claim 1  wherein the first member and the second member of the cap bracket from a triangular shape. 
     
     
         5 . The cultivator of  claim 1  wherein a first connection flange extends from the first side of the first member and a second connection flange extends from the first side of the second member. 
     
     
         6 . The cultivator of  claim 5  further comprising apertures passing through the first connection flange and apertures passing through the second connection flange. 
     
     
         7 . The cultivator of  claim 1  further comprising a second extended portion extending laterally from a second end of the cap bracket at the peak so that the second extended portion at the peak extends further laterally than the second end of the cap bracket at the first side of the cap bracket. 
     
     
         8 . The cultivator of  claim 1  wherein the ground working tool is a disc. 
     
     
         9 . The cultivator of  claim 8  wherein the disc is angled by the disc arm to be at an angle to the travel direction. 
     
     
         10 . The cultivator of  claim 1  wherein the bottom bracket and the cap bracket form a diamond shape when the cap bracket is connected to the bottom bracket. 
     
     
         11 . The cultivator of  claim 10  wherein torsion elements are provided in corners of the diamond shape formed by the cap bracket and the bottom bracket and between the cap bracket, the bottom bracket and the mounting bar. 
     
     
         12 . The cultivator of  claim 1  wherein the mounting bar has a square cross section. 
     
     
         13 . The cultivator of  claim 1  further comprising a spacer positioned between the cap brackets of the at least two adjacent ground engaging tools. 
     
     
         14 . The cultivator of  claim 13  wherein the spacer comprises:
 a first connection flange; 
 a second connection flange; and 
 a spacer member extending upwards from the first connection flange and the second connection flange, between the cap brackets of the at least two adjacent ground engaging tools, to define a contact surface. 
 
     
     
         15 . The cultivator of  claim 14  wherein the contact surface has a periphery outside a path of an arc the first extended portion of an adjacent cap bracket moves along as the cap bracket is rotated around the mounting bar. 
     
     
         16 . The cultivator of  claim 14  wherein the first extended portion of the cap bracket of one of the ground engaging tools abuts the contact surface of the spacer. 
     
     
         17 . The cultivator of  claim 14  wherein the first connection flange and the second connecting flange extend laterally from ends of the spacer member. 
     
     
         18 . The cultivator of  claim 17  wherein the first connection flange has an aperture passing therethrough and the second connection flange has an aperture passing therethrough. 
     
     
         19 . A ground engaging tool connectable to a mounting bar on a cultivator, the ground engaging tool comprising:
 a bottom bracket;   a cap bracket connectable to the bottom bracket, for attachment to the mounting bar, the cap bracket comprising:
 a first member having a first side and a second side; 
 a second member having a first side and a second side, the second member joined at the second side to the second side of the first member; 
 a peak formed where the second side of the first member is joined at the second side of the second member; and 
 a first extended portion extending laterally from a first end of the cap bracket at the peak so that the first extended portion at the peak extends further laterally than the first end of the cap bracket at the first side of the cap bracket; 
   an arm attached at a top end to the bottom bracket; and   a ground working tool attached to a bottom end of the arm.   
     
     
         20 . The ground engaging tool of  claim 19  wherein the bottom bracket and the cap bracket form a diamond shape when the cap bracket is connected to the bottom bracket. 
     
     
         21 . The ground engaging tool of  claim 19  further comprising a second extended portion extending laterally from a second end of the cap bracket at the peak so that the second extended portion at the peak extends further laterally than the second end of the cap bracket at the first side of the cap bracket. 
     
     
         22 . The ground engaging tool of  claim 19  wherein a first connection flange extends from the first side of the first member and a second connection flange extends from the first side of the second member. 
     
     
         23 . The ground engaging tool of  claim 19  wherein the ground working tool is a disc. 
     
     
         24 . The ground engaging tool of  claim 23  wherein the disc is angled by the disc arm to be at an angle to the travel direction. 
     
     
         25 . A cap bracket for connecting a ground engaging tool to a mounting bar of a cultivator, the cap bracket comprising:
 a first member having a first side and a second side;   a second member having a first side and a second side, the second member joined at the second side to the second side of the first member;   a peak formed where the second side of the first member is joined at the second side of the second member; and   a first extended portion extending laterally from a first end of the cap bracket at the peak so that the first extended portion at the peak extends further laterally than the first end of the cap bracket at the first side of the cap bracket.   
     
     
         26 . The cap bracket of  claim 25  further comprising a second extended portion extending laterally from a second end of the cap bracket at the peak so that the second extended portion at the peak extends further laterally than the second end of the cap bracket at the first side of the cap bracket. 
     
     
         27 . The cap bracket of  claim 25  wherein a first connection flange extends from the first side of the first member and a second connection flange extends from the first side of the second member. 
     
     
         28 . The cap bracket of  claim 27  further comprising apertures passing through the first connection flange and apertures passing through the second connection flange. 
     
     
         29 . A spacer for positioning between an adjacent pair of cap brackets, each cap bracket used to attach a ground engaging tool to a cultivator, the spacer comprising:
 a first connection flange;   a second connection flange; and   a spacer member extending upwards from the first connection flange and the second connection flange to define a contact surface positionable between the adjacent pair of cap brackets,   wherein each cap bracket, in the adjacent pair of cap brackets, is attached to a bottom bracket that is attached to a ground engaging tool by an arm.   
     
     
         30 . The spacer of  claim 29  wherein the contact surface has a periphery outside a path of an arc an extended portion of an adjacent cap bracket, extending laterally from a first side of the cap bracket, moves along as the cap bracket is rotated around a mounting bar. 
     
     
         31 . The spacer of  claim 30  wherein the extended portion of the adjacent cap bracket abuts the contact surface of the spacer. 
     
     
         32 . The spacer of  claim 29  wherein the first connection flange and the second connecting flange extend laterally from ends of the spacer member. 
     
     
         33 . The spacer of  claim 32  wherein the first connection flange has an aperture passing therethrough and the second connection flange has an aperture passing therethrough.